KR20160132527A

KR20160132527A - The method of dredging scheduling using impulse radar

Info

Publication number: KR20160132527A
Application number: KR1020150065137A
Authority: KR
Inventors: 곽정헌
Original assignee: 제이에이치네트웍스(주)
Priority date: 2015-05-11
Filing date: 2015-05-11
Publication date: 2016-11-21

Abstract

The present invention relates to a method for scheduling dredging of a sedimentary layer using an impulse radar. More particularly, the method comprises the steps of: periodically irradiating a sedimentary layer of a reservoir or a debris barrier with microwaves at a predetermined angle by using an impulse radar; detecting a reflected wave arrival time of microwaves reflected from the sedimentary layer, and comparing the detected reflected wave arrival time with a predetected reflected wave arrival time for a base layer to measure the thickness of the sedimentary layer; calculating a sedimented amount of the sedimentary layer by using the detected thickness of the sedimentary layer; converting the measured thickness and sedimented amount of the sedimentary layer into 3D GIS information; and calculating the sedimentation speed of the sedimentary layer by using the 3D GIS information to predict a dredging period of the sedimentary layer of the reservoir or the debris barrier.

Description

[0001] The present invention relates to a method of dredging dredging using an impulse radar,

The present invention relates to a sediment layer dredging scheduling method using an impulse radar, more specifically, to a method of calculating a thickness and an amount of a sediment layer deposited on a basal layer of a reservoir or a four-way dam through a periodically irradiated microwave, And a sediment layer dredging scheduling method using an impulse radar capable of predicting the dredging time of the sedimentary layer by calculating the deposition rate of the sedimentary layer.

At present, Korea is preparing for a disaster by installing a four-way dam in the watershed where there is a risk of destruction of the earth.

It is very important to determine the size of the dam and the location of the dam in order for the dam to effectively prevent the disaster according to the size of the earthquake.

In addition, it is necessary to continue the role of the four-way dam by thoroughly performing maintenance on the installed four-way dam.

It is very important to measure and manage the amount of sediment deposited by the dam, because the dam has the effect of restraining harmful soil generated by landslides.

In other words, when the amount of dredged sediments on the back of the dam is measured and the dredged sediments are properly removed, the stability of the dam can be maintained for a long period of time.

In addition, the maintenance method of the Sambang dam is to secure the low volume continuously by removing the dredged sediments from the back of the Sambang dam at an appropriate time.

The invention, filed in Korean Patent Application No. 10-2011-0037246, has a left dam shoulder and a right dam shoulder symmetrically provided on left and right sides of the left and right foot sides, and a dam between the left dam shoulder and the right dam shoulder, And a watertight passage integrally formed with the left and right dam shoulders for taking charge of water and water, an opening portion opened to connect the upstream and the downstream to the lower portion of the watertight passage, and an end surface communicating with an upstream end surface of the opening portion, It has a structure including an ecological passage which is hollow along the longitudinal direction and is connected to any one of the two side foot surfaces. Thus, it is possible to secure a function of preventing soil erosion, , And introduces the Sambang Dam, which is equipped with ecological aisles that can preserve the land ecosystem as a transport passage for wildlife during the season. have.

In addition, the invention, which was filed with the Korean Utility Model Registration No. 20-2008-0008146 (name of the design: complex type Sambang Dam), is a complex multi-purpose dam capable of simultaneously blocking the outflow of the underside and the function of blocking the driftwood .

However, there is a problem in that the function of the four-way dam can be weakened when the dredge is not advanced at a proper time when the landslide occurs after the installation of the dam.

Therefore, in order to keep the dredging capacity of dredge dams accumulated on the back of the dam, it is necessary to measure the amount of dredged sediments accumulated in the dredge dams in real time, Needs to be.

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to periodically measure the thickness and amount of a sedimentary layer deposited on a basal layer of a dam, to calculate a sedimentation rate of the sedimentary layer based on the measured thickness, This paper proposes a scheduling method for sediment layer dredging using impulse radar.

In addition, the sediment layer dredging rate is calculated to determine the dredging point of the sediment layer, so that the manager can immediately cope with it. In the case of the reservoir, the dredging dredging scheduling method using the impulse radar For the other purpose.

In the meantime, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned objects, the present invention provides a method of detecting microwave radiation, comprising the steps of: periodically irradiating a microwave with a predetermined angle to a deposition layer of a reservoir or a square dam using an impulse radar; Measuring the thickness of the deposited layer by comparing the arrival time of the detected reflected wave with the time of arrival of the reflected wave in the base layer that has been detected in advance, calculating the deposition amount of the deposited layer using the measured thickness of the deposited layer, Converting the thickness and the accumulated amount of the deposited layer into 3D GIS information, and calculating the deposition rate of the deposited layer using the converted 3D GIS information to estimate the dredging time of the deposited layer of the reservoir or the four- have.

Preferably, the microwave is an ultra-wideband pulse signal, and the deposition amount of the deposition layer may be calculated through a plurality of laminated blocks having a predetermined unit volume.

The present invention can periodically measure the thickness and amount of a sedimentary layer deposited on a basal layer of a reservoir or a four-way dam, and calculate the deposition rate of the sedimentary layer based on the measured thickness and amount to determine the dredging time of the sedimentary layer, The dredging time of the sediment layer is determined so that the manager can take immediate action. In the case of the reservoir, the dredging can be performed at an appropriate time and the maximum amount of fresh water can be secured.

1 illustrates a concept of a sediment layer dredging scheduling method using an impulse radar according to an embodiment of the present invention.
FIG. 2 is a graph illustrating a method of determining a dredging point of a sediment layer using data obtained by the method shown in FIG.

The term used in the present invention is a general term that is widely used at present. However, in some cases, there is a term selected arbitrarily by the applicant. In this case, the term used in the present invention It is necessary to understand the meaning.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

1 is a view showing a concept of a sedimentary layer dredging scheduling method using an impulse radar according to an embodiment of the present invention. It is a graph that explains the method of determining the dredging point of sediment.

Referring to FIGS. 1 and 2, a sedimentary layer dredging scheduling method using an impulse radar includes the step of periodically irradiating a microwave with a predetermined angle to a deposition layer of a reservoir or a square dam using an impulse radar.

At this time, the microwave irradiated uses an ultra-wideband pulse signal.

Meanwhile, a method of scheduling a sediment layer dredging using an impulse radar according to an embodiment of the present invention includes: irradiating a microwave on a sediment layer of a reservoir or a four-way dam at a predetermined angle as described above, And a step of measuring the arrival time of the detected reflected wave and the thickness of the deposited layer by comparing the arrival time of the detected reflected wave with the reflected wave arrival time in the previously detected base layer.

At this time, the reflected wave arrival time of the base layer is a value obtained by measuring the arrival time of the microwave irradiated in a state where the accumulation layer is not accumulated in the reservoir or the four-way dam, and the thickness (DELTA H) of the accumulation layer can be obtained by the following equation .

In this case, x1 is the distance to the basal layer where the sediment layer of the reservoir or the four-

x1 = microwave irradiation speed (= the same as the light flux) x t1 (1/2 of the arrival time of the reflected wave after microwave irradiation in the base layer).

On the other hand, x2 is the distance to the sediment layer deposited on the basal layer of the reservoir or the four-

x2 = microwave irradiation speed (= the same as the light flux) x t2 (1/2 of the arrival time of the reflected wave after microwave irradiation in the deposited layer).

In addition, &thetas; 1 is a value that is already selected at the time of microwave irradiation, and the microwave irradiation speed is also the same fixed value as the speed of light.

As a result, using the above x1, x2, θ1 and the light flux, ΔH = (x1-x2) sin θ1, ΔH can be calculated as the thickness of the deposited layer deposited on the basal layer of the reservoir do.

Meanwhile, a deposition layer dredging scheduling method using an impulse radar according to an embodiment of the present invention can calculate the deposition amount using the calculated thickness of the deposition layer. As shown in FIG. 1, Is calculated through a plurality of laminated blocks which are shown with a predetermined unit volume.

That is, as shown in FIG. 1, the number of the stacked blocks occupied by the accumulated layer can be counted and the accumulated amount accumulated in the reservoir or the four-way dam can be calculated.

Meanwhile, a sedimentary layer dredging scheduling method using an impulse radar according to an embodiment of the present invention includes a step of converting the measured thickness and accumulation amount of the sediment layer into 3D GIS (Geographic Information System) information, And estimating the dredging time of the sediment layer of the reservoir or the four-way dam by calculating the deposition rate of the deposit.

Hereinafter, the deposition rate calculation of the deposited layer will be described in detail with reference to FIG.

First, basic data as shown in FIG. 2 can be obtained through periodic microwave irradiation.

Here, Ya represents the height of the sediment layer from the start point of the data measurement to the present time, and Xa represents the deposition time from the start of the data measurement to the present.

On the other hand, in the graph of FIG. 2, the inclination (?) Means the deposition rate of the deposition layer and is calculated by the following equation.

At this time, assuming that the height of the dredging target sediment layer is Yb, the estimated dredging time point Xb is calculated by the following equation.

As a result, the sedimentary layer dredging scheduling method using the impulse radar according to an embodiment of the present invention periodically measures the thickness and amount of the sediment deposited on the basal layer of the reservoir or the four-way dam through the above-described technical constructions, It is possible to determine the dredging time of the sedimentary layer by calculating the deposition rate of the sedimentary layer and to determine the dredging time of the sedimentary layer by calculating the deposition rate of the sedimentary layer to enable the manager to take immediate action. It is possible to secure fresh water.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the present invention. Various changes and modifications may be made by those skilled in the art.

Claims

Periodically irradiating the microwave to the accumulation layer of the reservoir or the four-way dam using an impulse radar so as to form a predetermined angle;
Measuring a thickness of the deposited layer by comparing the arrival time of the reflected wave of the reflected microwave with the reflected wave arrival time of the base layer that has been detected in advance;
Calculating a deposition amount of the deposited layer using the measured thickness of the deposited layer;
Converting the measured thickness and deposited amount of the deposited layer into 3D GIS information; And
And calculating the deposition rate of the deposit layer using the converted 3D GIS information to estimate the dredging time of the deposit layer of the reservoir or the dam.

The method according to claim 1,
Wherein the microwave is an ultra-wideband pulse signal.

3. The method according to claim 1 or 2,
Wherein the accumulation amount of the deposit layer is calculated through a plurality of laminated blocks having a predetermined unit volume and visualized.